Initial commit: Tasteby - YouTube restaurant map service

Backend (FastAPI + Oracle ADB), Frontend (Next.js), daemon worker.
Features: channel/video/restaurant management, semantic search,
Google OAuth, user reviews.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/api/routes/channels.py

@@ -0,0 +1,46 @@
+"""Channel API routes."""
+
+from fastapi import APIRouter, HTTPException
+from pydantic import BaseModel
+
+from core import youtube
+
+router = APIRouter()
+
+
+class ChannelCreate(BaseModel):
+    channel_id: str
+    channel_name: str
+
+
+@router.get("")
+def list_channels():
+    return youtube.get_active_channels()
+
+
+@router.post("", status_code=201)
+def create_channel(body: ChannelCreate):
+    try:
+        row_id = youtube.add_channel(body.channel_id, body.channel_name)
+        return {"id": row_id, "channel_id": body.channel_id}
+    except Exception as e:
+        if "UQ_CHANNELS_CID" in str(e).upper():
+            raise HTTPException(409, "Channel already exists")
+        raise
+
+
+@router.post("/{channel_id}/scan")
+def scan_channel(channel_id: str):
+    """Trigger a scan for new videos from this channel."""
+    channels = youtube.get_active_channels()
+    ch = next((c for c in channels if c["channel_id"] == channel_id), None)
+    if not ch:
+        raise HTTPException(404, "Channel not found")
+
+    videos = youtube.fetch_channel_videos(channel_id, max_results=50)
+    new_count = 0
+    for v in videos:
+        row_id = youtube.save_video(ch["id"], v)
+        if row_id:
+            new_count += 1
+    return {"total_fetched": len(videos), "new_videos": new_count}